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Finding the Fourth Proportional to 455,586.80, 683,380.20 and 243,010.40

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Solution

The fourth proportional to 455,586.80, 683,380.20 and 243,010.40 is: 364,515.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,586.80 : 683,380.20 = 243,010.40 : x
  2. Step 2: Convert to fraction form
    455,586.80/683,380.20 = 243,010.40/x
  3. Step 3: Cross multiply
    455,586.80x = 683,380.20 × 243,010.40
  4. Step 4: Simplify right side
    455,586.80x = 166,068,495,754.08
  5. Step 5: Solve for x
    x = 166,068,495,754.08/455,586.80
  6. Step 6: Final answer
    x = 364,515.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.